Here’s a way to use getopt to handle arguments when creating command line applications. It works quite well with the standard help (–help or -h) by showing usage when bad arguments are passed.

I like it. It’s so simple and flexible. Define it with none, then assign sys.argv in place of argv.

This is useful if you need to look at the last arguments before deciding what to do, possibly for interoperability with some older code where the order of command line arguments is already set in stone.